Proceedings of the fourth Pan-African ornithological congress / 
editor, D.N. Johnson. 
 - [S.l.] :  Southern African Ornithological Society,  1980. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0620047585 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ornithology -- Congresses.--Ornithology -- Congresses.<br/>Birds -- Congresses.--Birds -- Congresses.